Elastoplastic model for discontinuous shear deformation of deep rock mass

Deep rock mass possesses some unusual properties due to high earth stress, which further result in new problems that have not been well understood and explained up to date. In order to investigate the deformation mechanism, the complete deformation process of deep rock mass, with a great emphasis on...

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Published inJournal of Central South University Vol. 18; no. 3; pp. 866 - 873
Main Authors Wang, Ming-yang, Fan, Peng-xian, Qian, Qi-hu, Deng, Hong-jian
Format Journal Article
LanguageEnglish
Published Changsha Central South University 01.06.2011
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ISSN2095-2899
2227-5223
DOI10.1007/s11771-011-0775-6

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Abstract Deep rock mass possesses some unusual properties due to high earth stress, which further result in new problems that have not been well understood and explained up to date. In order to investigate the deformation mechanism, the complete deformation process of deep rock mass, with a great emphasis on local shear deformation stage, was analyzed in detail. The quasi continuous shear deformation of the deep rock mass is described by a combination of smooth functions: the averaged distribution of the original deformation field, and the local discontinuities along the slip lines. Hence, an elasto-plastic model is established for the shear deformation process, in which the rotational displacement is taken into account as well as the translational component. Numerical analysis method was developed for case study. Deformation process of a tunnel under high earth stress was investigated for verification.
AbstractList Deep rock mass possesses some unusual properties due to high earth stress, which further result in new problems that have not been well understood and explained up to date. In order to investigate the deformation mechanism, the complete deformation process of deep rock mass, with a great emphasis on local shear deformation stage, was analyzed in detail. The quasi continuous shear deformation of the deep rock mass is described by a combination of smooth functions: the averaged distribution of the original deformation field, and the local discontinuities along the slip lines. Hence, an elasto-plastic model is established for the shear deformation process, in which the rotational displacement is taken into account as well as the translational component. Numerical analysis method was developed for case study. Deformation process of a tunnel under high earth stress was investigated for verification.
Author Deng, Hong-jian
Wang, Ming-yang
Fan, Peng-xian
Qian, Qi-hu
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Cites_doi 10.1007/BF00851669
10.1016/j.ijrmms.2007.03.002
10.1016/S1365-1609(03)00013-3
10.1016/S1365-1609(99)00074-X
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Issue 3
Keywords discontinuous deformation
elasto-plastic model
deep rock mass
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Snippet Deep rock mass possesses some unusual properties due to high earth stress, which further result in new problems that have not been well understood and...
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SubjectTerms Engineering
Metallic Materials
Title Elastoplastic model for discontinuous shear deformation of deep rock mass
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